IslandGA does not work with stochastic evaluator

The reason is that every island has a local RNG which is initialized in the IslandGAMainLoop. However, the first call to the evaluator happens outside the main loop directly in the SolutionsCreator and hence throws an exception as the RNG is not initialized. Using the global RNG is not a solution as this would lead to race conditions if a parallel engine is used.

The backwards compatibility region in r9039 cannot simply be removed as stated. The graph would break. I would just put a comment at the beginning of the code explaining the backwards compatibility and telling that ussp0 and ussp1 should be merged putting LocalRandomCreator before SolutionsCreator and removing RandomCreator.

In the mainloop the local random creator should also have a note that it can be removed from the graph when we'd go to 3.4.

Finally, a small thing: I would mark the Iterate() method in OperatorGraph virtual.